US 12,344,734 B2
Biodegradable material for additive manufacture
Donald L. Vanelli, Novi, MI (US); Richard B. Booth, Novi, MI (US); and Karl Freihart, Novi, MI (US)
Assigned to EOS of North America, Inc.
Filed by EOS of North America, Inc., Novi, MI (US)
Filed on Jan. 23, 2023, as Appl. No. 18/100,111.
Application 18/100,111 is a continuation of application No. 17/143,576, filed on Jan. 7, 2021, granted, now 11,578,201.
Claims priority of provisional application 62/958,353, filed on Jan. 8, 2020.
Prior Publication US 2023/0151201 A1, May 18, 2023
Int. Cl. B33Y 70/00 (2020.01); B33Y 80/00 (2015.01); C08L 33/24 (2006.01); B33Y 10/00 (2015.01)
CPC C08L 33/24 (2013.01) [B33Y 70/00 (2014.12); B33Y 80/00 (2014.12); B33Y 10/00 (2014.12); C08L 2201/06 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An improved build material for use in additive manufacture of a three dimensional object which is generated through layerwise build-up of improved build material corresponding to consecutive cross-sections of the object to be built, wherein the improvement comprises:
a polymeric material forming substantially all of the build material by weight; and
a biodegrading additive incorporated in the build material which accelerates decomposition of the polymeric material, the biodegrading additive being activated by extant chemical or microbial elements when used improved build material incorporated in a built object is placed in an environment for disposal of the object, the biodegrading additive being capable of functioning after being fused by laser melting in additive manufacture at a temperature above about 180° C.,
wherein the environment is an ecological biome in which the build object is placed for disposal.